Rod-cutting device.



N. DU BRUL.

ROD CUTTING DEVICE.

APPLICATION FILED SEPT-18, 1915.

Patented May15,.1917;

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N. DU BRUL. ROD CUTTING DEVICE.

APPLICATION FILED SEPT. 18, 1915- 1,226,066. Patented May15,1917.

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llhl 1'1 NAPOLEON DUBRUL, OE" CINCINNATI, OHIO.

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Specification of Letters Patent.

Patented May 15, 1917.

'1 '0 all whom it may concern Be it known that I, NAPOLEON DU BRUL, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohioyhave invented certain new and useful Improvements in Rod-Cutting Devices, of which the following is a specification.

This invention relates to cutting devices in which an object or material manufactured in continuous form or in long lengths, has to be subdivided to produce individual articles,

and particularly to that. class of such devices in which the object to be subdivided is fed constantly past a cutting point at which the line of feed is intersected by a utter. i

Some of the essential requisites of a successful cutting device of the kind referred to, are that the cutting stroke shall be made at rapidly recurring uniform intervals; that cutting shall take place without interrupting the feed ofthe objectfrom which the article is being cut, thus necessitating move ment of the cutter with the object during intersection of the line of feed; and that the cutting takes place without injuring the object, which is in some cases of delicate structure, for. which purpose the cutting stroke is accompanied by rapid edge movement of the cutter itself.

In cuttingdevices of the class referred to, a high momentum must be rapidly over come in reversing the direction of movement in fast running machines. Therefore, it is necessary-that the construction of such a device shall be durable. cheaply maintained, as well as effective and satisfactory in operation.

One object of my invention is to produce a cutter capable of rapid action with a mini mum of wear and noise, and simple and light in construction.

A further obiect is to produce a cutter that will beparticularlv valuable in rapidly severing obiectsof relative delicacy, such for instance as ci arettes. where a quick incision of the delicate cigarette rod is absolutelv necessary in connection with an accurately timed out to coincide with the con tinuous and rapid feed of the rod, these requirements increasing in importance with the capacity. of the machine.

. Another object of my invention is to provide a device of the character referred to, that can be easily applied as a unit to machines already in the market and to replace worn out or inferior cutting devices now in such service.

Another object of my invention is to provide a device of the kind referred to that will require the minimum of attention from the operator for lubrication.

A further .object is to provide a device that may be conveniently assembled in exact relation and one in which access to the several parts is easily obtained for repairs or adjustment, and one providing easily changeable parts for cutting objects of different lengths.

A further object is to reduce to a minimum the number and weight of reciprocat ing parts, so thatgreater speedsor a greater number of cuts per minute can be obtained.

With the above and other objects in view, my invention consists in the construction of the different parts and also in their combination and arrangement in relation one to another as set forth particularly in the drawings and description hereto attached.

An illustrative embodiment of the invention designed foruse on a cigarette machine is shown in the accompanyingdrawings, in which like characters represent similar parts, and in which- Figure 1 is a top plan view;

- Fig. 2 is an end elevation;

Fig. 3 is a front elevation;

Fig. 4 is an end elevation at the cutter end:

'Fig. 5 is a detail view of the cutter and its mounting;

Fig. 6 is a detail view of the arcuate block by means of which the lever-stud engages in the slot of the disk-cam.

in the drawings is shown a machine frame 1. having a drive shaft 1 on which is a driving gear 1. meshing with an intermediate gear 1. A housing 2 is mounted on the frame '1. provided with bearings 2 carrying shaft 3. at one end of which is mounted a gear 3*. deriving movement through gears 1 and 1 from the main shaft 1 Gear 1 is supported by the arm K which is allowed to swing on shaft 1 and held in place on the housing projection and permitted to be moved in. a slotted projection to admit change gears 3 of diiferent sizes. Other positive driving means may also be employed at this point without departing from my invention.

The housing 2 may be inclosed to form The slide member 4 carriestwo one end reduced to receive a roller, and having at its other end an adjusting nut 4 by which to adjust the stud. The surfaces of the rollers being conical, longitudinal adjustment of the studs causes them to fit accurately to the working faces of the cam 3 The cam 3 has its edges operating between the two rollers 4 which reciprocates the slide member 4 and the cutter longitudinally of the path of the rod to be severed.

On one side of the housing next to slide 4, an opening 4" is made to facilitate the insertion and withdrawal of the studs 4*, with the rollers thereon, from the outside of the housing, and to adjust the rollers to the cam. The opening 4 may be closed by a plate screwed on the outside face to prevent the oil from splashing out at this point. When in operation, a cover 2 can be applied to the top of the oil chamber to prevent the oil from splashing out. By this construction, the cam and the slide member are inclosed in a receptacle where oil is put to lubricate the several elements, such as between the edges of the cam and the rollers, the bearing of the rollers upon the reduced ends of the studs, the reciprocating slide member 4, and the bearings of the cam shaft.

The reciprocating slide 4 is provided with any convenient means of mounting the cutter 5, as for instance a shaft 5, which I show projecting through the slide 4, having on one end adjusting nuts 5 for taking up wear, and upon the other end arms 6 and 5, which act as a single arm on said, pivot shaft, but are relatively adjustable about the axis of the shaft to'insure complete intersection of the line of feed by the edge of the circular knife5 mounted on said arm 5.

The arm 5 carries on one end the bearing 5 in which is journaled the shaft 5 which carries the aforesaid knife 5, said knife being held in place thereon between two collars 5 by clamp nut 5 At the other end of the knife shaft is mounted a pulley '5 around which is run a belt for rotating the knife 5, said belt being led from any suitable source of rotary motion, and being guided in any convenient way to permit freedom of oscillation of the knife mounting without impairing drive of the belt.

To provide for the above-mentioned relative angular adjustments of the arms 6 and 5, arm 6 has an extension 6 provided with cam 3 a slot 6 and is held to arm 5 by a bolt 6. By thus providing means of adjusting the knife 5 with relation to the path of travel of the object to be cut, I provide for the wearing down of the knife by repeated sharpening,to a small diameter.

To the reciprocating slide member 4 is secured a projecting bracket 7 carrying cut ting ledges 7 to support the rod during the cutting stroke. This construction is not only simple and durable, but extremely efficient for this purpose. I

/Vith the above-described construction and relation of parts, the slide 4 can be of light weight, and reciprocation is required of only a few, comparatively light parts.

A further advantage of this construction and arrangement is that the knife can come squarely down on the top of the rod to be severed. As the seam of a cigarette rod is formed on the top, when cutting ovalshaped cigarettes especially, it is desirable to cut squarely down on the seam and pass through the smaller dimension of the elliptical oval shape of the rod, if the best possible results are to be attained.

To produce the upand-down movements of the knife, the arm 6 has a rearward extension 6, having a bearing 6 in which is journaled a stud 6, held in place by suitable means as by limiting nut 6 the other ferred, any other suitable means to this end may be employed without departing from my invention. The face of the eccentric cam is approximately the curve of the cam 3, as shown inFigs. 1 and 3, to permit the block 6 to follow without disengagement at one end of the throw or interference at the other end. The block 6 being held in engagement with the cam 3 the lever arm 6 is moved up and down vertically, thus causing the cutter 5 to pass into and out of the path of the article to be cut.

Eccentric cam 3 is so timed with the cam 3 that the cut takes place while the cutter is traveling in the direction and at the same speed of the article to be cut and at the time desired.

Experience has demonstrated that this construction makes a cutting device of a very smooth-running character and one that is not subject to shocks either in the longitudinal or vertical movementand is, there fore, capable of operation at relatively-high speed.

With the construction as hereinbefore de scribed, wear can be taken up at points where it mostly occurs, and all parts are readily accessible for this purpose, or for replacing when necessary.

To sum up the operation, as the main lVhile this construction is pre- L shaft revolves, power is transmitted to the cam shaft of the cutting device. Cam 3 working between the rollers 4* causes the slide at to reciprocate longitudinally, according to the amount of throw given by cam 53'. At the predetermined point, the cutter is dipped down and up through the rod by eccentric 3 and while the cutting proceeds, the slide at travels with the rod so as to avoid buckling. At a further point in the stroke, the cutter 5 is lifted clear of the path of the article to be cut, and by the movement of cam 23 is returned to its first position.

I claim 1. In a rod cutter, a housing having a Inbricant chamber, a slide mounted on said housing and intersecting the lubricant chamber, a shaft also intersecting said chamber, a

, cam located within the chamber and coacting with the slide to reciprocate the same, a knife mounted upon the slide outside of the chamber, and means for developing a transverse reciprocating movement in the knife comprising a second cam mounted on the cam shaft; said slide having mounted thereon, studs within the chamber, in position to re ceive the first-mentioned cam in developing the said reciprocating movement.

2. In a rod cutter, a housing having a lubricant chamber, a slide mounted on said housing and intersecting the lubricant" chamher, a shaft also intersecting said chamber, a cam located within the chamber and c0acting with the slide to reciprocate the same, a knife mounted upon the slide outside of the chamber, and means for developing a transverse reciprocating movement in the knife comprising a second cam mounted on the cam shaft; said slide having mounted there on, studs within the chamber, in position to receive the first-mentioned cam in developing the said reciprocating movement; said studs being introduced transversely through the slide and being accessible from the outer side of said. slide.

8. In a rod cutter, a housing having a lubricant chamber, a slide mounted on said housing and intersecting the lubricant chamher, a shaft also intersecting said chamber, a cam located within the chamber and coacting with the slide to reciprocate the same, a knife mounted upon the slide outside of the chamber, and. means for developing a trans verse reciprocating movement in the knife comprising a second cam mounted on the cam shaft; said slide having mounted thereon, studs within the chamber, in position to receive the first-mentioned cam in developing the said reciprocating movement; said studs being introduced transversely through the slide and being accessible from the outer side of said slide; said lubricant chamber having an opening permitting the introduction and withdrawal of said studs without removal of the slide.

4. In a rod cutter, the combination of a housing having a lubricant chamber, a slide mounted upon said housing and intersecting said chamber, a cam located in said chamber and enacting with said slide to reciprocate the same, a knife mounted on said slide and reciprocating therewith in the line of rod feed, and means for developing a transverse reciprocating movement in the knife; the mounting for said knife comprising a rockerarm pivotally supported on the slide and carrying a bearing in which the knife is mounted torotate; and the means for developing said transverse reciprocating movement comprising a second arm extending from the knife mounting, and a second cam mounted upon the shaft of the cam within the lubricant chamber; said second cam having a face groove substantially corresponding in curvature with the curvature of the slide reciprocating cam, and said second arm carrying a stud having its end working in said face groove.

5. In a rod cutter, the combination of a housing having a lubricant chamber, a slide mounted upon said housing and intersecting said chamber, a cam located in said chamber and coacting with said slide to reciprocate the same, a knife mounted on said slide and reciprocating therewith in the line of rod feed, and means for developing a transverse reciprocating movement in the knife; the mounting for said knife comprising a rockerarm pivotally supported on the slide and carrying a bearing in which the knife is mounted to rotate; and the means for developing said transverse reciprocating movement comprising a second arm extending from the knife mounting, and a second cam mounted upon the shaft of the cam within the lubricant chamber; said second cam having a face groove substantially corresponding in curvature with the curvature of the slide reciprocating cam, and said second arm carrying a stud having its end constructed in the form of a curved segment fitted to and working in said face groove.

6. In a rod cutter, a housing constructed with a receptacle, a cam mounted to operate within the receptacle, a sliding member having rollers projecting into the receptacle, and taking reciprocating movement from the cam, and a cutter reciprocating with the sliding member; said housing having an outside opening next to the sliding member to permit the rollers to be applied to or withdrawn from the sliding member.

The foregoing specification signed at Washington, District of Columbia, this 17th day of September, 1915.

NAPOLEON DU BRUL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

